Display screen with a graphical user interface



FIG. 1 is a front view of a display screen with a graphical user interface showing our new design;

FIG. 2 is a front view of a second embodiment thereof;

FIG. 3 is a front view of a third embodiment thereof;

FIG. 4 is a front view of a fourth embodiment thereof;

FIG. 5 is a front view of a fifth embodiment thereof;

FIG. 6 is a front view of a sixth embodiment thereof;

FIG. 7 is a front view of a seventh embodiment thereof;

FIG. 8 is a front view of an eighth embodiment thereof;

FIG. 9 is a front view of a ninth embodiment thereof;

FIG. 10 is a front view of a tenth embodiment thereof;

FIG. 11 is a front view of an eleventh embodiment thereof;

FIG. 12 is a front view of a twelfth embodiment thereof; and,

FIG. 13 is a front view of a thirteenth embodiment thereof.

The broken line showing of display screens, text and graphical elements form no part of the claimed design. 

CLAIM The ornamental design for a display screen with a graphical user interface, as shown and described. 